Jose Diaz vs. Earl Mattingly — Career Comparison

On the career pitching numbers, Earl Mattingly posted a stronger line than Jose Diaz. Earl Mattingly posted stronger numbers in ERA (2.51 vs 9.39) and WHIP (1.744 vs 2.609). By the career numbers, Earl Mattingly had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.